Troy-Bilt AutoDrive 604 User Manual
Page 19
19
CHANGING THE DECK BELT(S)
All belts on your tractor are subject to wear and should be replaced if any signs of cracking, shredding or
rotting are present.
IMPORTANT:
The V-belts found on your tractor are specially designed to engage and disengage safely. A
substitute (non-OEM) V-belt can be dangerous by not disengaging completely. For a proper working machine,
use factory approved belts.
To change or replace the deck belt(s) on your tractor, proceed as follows:
NOTE:
Removing the deck from the tractor as instructed earlier in this section will ease the following steps,
but is not necessary.
42-inch decks
• Lower the deck by moving the lift lever into the bottom notch on the right fender.
• Remove the belt guards by removing the self-tapping screws that fasten them to the deck surface.
• Grasp the PTO idler pulley bracket and pivot it toward the discharge chute to relieve tension on the belt.
• Remove the deck belt from the bottom portion of the engine pulley and from around the PTO idler
pulley.
• Route the new belt as shown in Figure 14, around the deck pulleys, idler pulley and engine pulley.
IMPORTANT:
It is recommended that the PTO be readjusted after replacing the deck belt. Refer to PTO
(POWER TAKE-OFF) ADJUSTMENT
in the ADJUSTMENTS section of this manual for the proper procedure.
• Remount the belt guards removed earlier.
Figure 15
46-inch decks
• Lower the deck by moving the lift lever into the bottom notch on the right fender.
• Remove the belt guards by removing the self-tapping screws that fasten them to the deck.
• Grasp the PTO idler pulley bracket and pivot it toward the discharge chute to relieve tension on the belt.
• Remove the deck belt from the bottom portion of the engine pulley and from around the PTO idler
pulley.
• Remove and discard old belt.
• Route the new belt(s) as shown in Figure 15. OEM belt part numbers shown below.
Engine Pulley
PTO Idler Pulley
Left Hand
Double Pulley
Right Hand
Double Pulley
Center Pulley
Deck Idler Pulley
Deck belt (Bottom)
PTO belt (Top)
NOTE:
Left hand belt cover not shown for clarity. 46-inch deck shown.
Self-Tapping Screws
(beneath belt guard)
(mounted on tractor)